Description:
Mozilla has published the advisories (MFSA 2021-07 and MFSA 2021-08) to address multiple vulnerabilities in Firefox browser. A remote attacker could entice a user running a vulnerable browser to visit a web page with specially crafted content to exploit the vulnerabilities.
Affected Systems:
- Firefox ESR Windows versions prior to version 78.8
- Firefox Windows versions prior to version 86
Impact:
Successful exploitation of the vulnerability could lead to arbitrary code execution information disclosure, and security feature bypass on an affected system.
Recommendation:
Mozilla has released new versions of the product to address the issues and they can be downloaded at the following URLs:
- Firefox 86 for Windows
https://www.mozilla.org/en-US/firefox/all/
- Firefox ESR 78.8 for Windows
https://www.mozilla.org/en-US/firefox/organizations/all/
Users of affected systems should follow the recommendations provided by the product vendor and take immediate actions to mitigate the risk.
More Information:
- https://www.mozilla.org/en-US/security/advisories/mfsa2021-07/
- https://www.mozilla.org/en-US/security/advisories/mfsa2021-08/
- https://www.hkcert.org/security-bulletin/mozilla-products-multiple-vulnerabilities_20210224
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-23968 (to CVE-2021-23975)
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-23978
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-23979